SAMARQAND VILOYATI SHAROITIDA OQBOSH VA GULKARAM EKINLARINING FOTOSINTETIK FAOLIYATIGA TURLI FOSFORLI O‘G‘ITLARNING TA’SIRI

Abstract

This article studies the effect of various phosphorus fertilizers on the photosynthetic activity of white cabbage and cauliflower crops under typical gray soil conditions of the Samarkand region. When various phosphorus fertilizers were applied against the background of N180K90, the photosynthetic activity of white cabbage and cauliflower was relatively improved. According to the results of the three-year average (2021-2023) study, the highest indicator in white cabbage was observed in the variants where superphosphate and Ps-agro fertilizers were used. It was also found that in cauliflower crops, superphosphate and NKFU, as well as Psagro and ammophos fertilizers, are of equal importance in terms of photosynthetic potential and photosynthetic net productivity.